Global evidence indicates minimal connection between immigration and crime. Nordic research, however, has been generally carried out on individuals and shows that immigrants are over-represented in crime. This has led to claims that high crime rates are due to immigration. We directed our study towards these claims by analyzing immigrant population prevalence, defined as the percent of foreign-born individuals, and violent crime in Swedish municipalities between 2000 and 2020. Nearly all municipalities had higher violent crime rates in 2020 relative to 2000. To discern whether drastic increases in municipality-level crime rates could be connected to municipality-level immigrant population prevalence, a retrospective case–control design was used to select 20 municipalities with the highest increase in reported violent crime rates and 20 municipalities with the lowest increase in reported violent crime rates. Immigrant population prevalence had little association with high rates of reported violent crime. The average association between immigrant population prevalence and violent crime rates calculated from all municipalities was also weak and non-significant (p > 0.05). Municipalities with a high increase in crime tended to have more crime correlates than municipalities with a low increase in crime. However, more research is needed on the impact of migration in small towns, especially those that have experienced economic and social stagnation.

Self-regulation is integral to human well-being. Previous research established associations between self-regulation and life outcomes, although mostly based on cross-sectional or longitudinal research with relatively short follow-up periods. We aimed to investigate associations between self-regulation during childhood and low education, psychiatric diagnosis, conviction for non-violent and violent crime, and premature mortality up to 50 years later. The sample consisted of boys born between 1943 and 1951 in Stockholm, Sweden, who were initially interviewed as part of the Clientele Study and followed up until they were 58–66 years of age as part of the Stockholm Life Course Project (N = 251). Our measure of self-regulation was indicated by five dimensions extracted from multiple sources and informants when study members were children. Information on life outcomes were extracted from Swedish national registry data available through 2009. Results from logistic regression and survival analyses showed that lower self-regulation during childhood was associated with a higher risk of conviction for non-violent and violent crime, receiving a psychiatric diagnosis and premature mortality up until late adulthood. Self-regulation was not associated with low education. Analyses were adjusted for intelligence and parental socioeconomic status. While based on a relatively small sample and measurement of self-regulation using data from the 1960s, our study supports the notion that self-regulation during childhood is central for well-being across the lifespan.

Background: Youth offenders have a high risk of being injured or dying prematurely. However, few studies have considered the role of imprisonment and potential childhood risk factors for these high rates.AimTo examine the risk of unintentional injury and premature death in non-imprisoned and imprisoned youth offenders, and to examine the role of parental criminal convictions and psychiatric disorders and own childhood psychiatric disorders.

Methods: All individuals (N = 1,839,711) born in Sweden between 1978 and 1996 were identified using Swedish population-based registers. The exposure was criminal conviction between ages 15–20 years of age.

Results: Imprisoned youth offenders had the highest risk for unintentional injury (HR = 2.29 [2.19–2.40]) and premature death (HR = 10.76 [9.52–12.16]), followed by nonimprisoned youth offenders, compared to non-convicted youth. All childhood risk factors increased the risk for these outcomes among non-imprisoned youth offenders. Among imprisoned youth offenders, parental criminal convictions and parental psychiatric disorders increased the risk for unintentional injury, and parental psychiatric disorders and own childhood psychiatric disorders increased the risk for premature death.

Conclusions: Our study shows there are robust modifiable childhood risk factors for injury and mortality among youth offenders. However, the importance of them to assess risk may differ between non-imprisoned and imprisoned youth offenders.

Background: Psychiatric diagnoses are important risk factors for criminal convictions, but few longitudinal studies have examined comorbidity patterns in relation to youth criminal convictions.

Aim: To explore associations between specific psychiatric diagnoses (substance use disorder (SUD), ADHD, depression, PTSD, intellectual disabilities (ID), and autism spectrum disorders (ASD)) and comorbidities of internalizing, externalizing, or neurodevelopmental diagnoses (NDD) in relation to risk of non-violent or violent criminal convictions in youth, including potential sex differences.

Methods: Data on 1,411,538 individuals born in Sweden (1985–1998) were obtained from national population-based registers. Exposure was psychiatric diagnoses and outcome was criminal convictions between ages 15 and 20.

Results: 17% of individuals had a psychiatric diagnosis, of whom 20% were convicted of a crime. All diagnoses, except ID and ASD, increased the risk of non-violent and violent crimes. Comorbidities of externalizing and internalizing diagnoses heightened the risk compared to single diagnoses. NDD increased the risk among SUD, depression, and PTSD, while NDD comorbid with another NDD decreased the risk for criminal convictions.

Conclusion: Of the three comorbidity categories, externalizing disorders heightened risk the most, followed by internalizing disorders. This study highlights specific risk patterns for criminal convictions related to comorbidities, and to crime type and sex.

Much is known about the patterning of offending throughout life, but less about the patterning of victimization. In this study, we used data from the Stockholm Life-Course Project (SLCP), a longitudinal study that includes measures of childhood problem behaviour. We analysed offending (criminal conviction and police suspicion), inpatient hospitalization and outpatient care for violent victimization. We replicated the well-established age-crime curve amongst SLCP study members. We found that hospitalization for severe violent victimization was most likely to occur between 20 and 40 years of age. We additionally considered how childhood problem behaviour impacted overall risk and life-course patterning of offending and victimization. Childhood problem behaviour was associated with a greater risk of criminal conviction. But childhood problem behaviour showed inconsistent associations with risk for police suspicion. Childhood problem behaviour was generally associated with greater involvement in crime up to middle adulthood. Childhood problem behaviour was generally associated with a greater risk of victimization. However, we were limited in our ability to estimate the effect of childhood problem behaviour on life-course patterning of victimization due to the rarity of victimization. These results imply a need for larger studies on violent victimization and greater nuance in our understanding of childhood risks and their life-long outcomes.

There is widespread concern in both the popular and academic literature that a surplus of men in a population intensifies mating competition between men, particularly unpartnered men, resulting in increased violence towards both men and women. Recent contributions challenge this perspective and argue that male mating competition and levels of violence will be higher when sex ratios are female-skewed. Existing empirical evidence remains inconclusive. We argue that this empirical ambiguity results from analyses of aggregate-level data, which put inferences at risk of ecological fallacies. Our analysis circumvents such problems by using individual-level, longitudinal demographic register and police data for the Stockholm metropolitan area, Sweden (1990–2003, n = 758,498). These data allow us to investigate the association between municipality-level sex ratios and violent offending (homicide, assault, threat, and sexual crimes) while adjusting for sociodemographic factors. Results suggest that aggregated offending rates are negatively associated with male-skewed sex ratios, whereas individual-level violent offending correlates positively with male-skews. We find that the more-men-more-violence association holds particularly for male violence against other men, but is insignificant for violence against women. Moreover, the association is significant among childless men, but not among fathers. However, robustness checks question the causality of these associations. Female violent offending is positively, albeit due to a low number of cases, insignificantly associated with male-skews. Moreover, both male and female non-violent offending is higher in male-skewed municipalities. We discuss the implications with regard to the theoretical debate and problems of unobserved heterogeneity in the sex ratio literature.

Adolescents are at a relatively high risk of victimization. Within criminology, victimization has been largely attributed to risky behaviors and low self-control. Yet, these factors explain only a modest amount of victimization, suggesting that other theoretical predictors may offer additional insight. One factor that may predict victimization, as well as decreasing victimization risk after adolescence, is psychosocial maturation. Using data from the longitudinal Pathways to Desistance study, this study tested the association between psychosocial maturation and victimization. The analytic sample for this study (1087 individuals; 5681 yearly observations) included participants under 18 years at study recruitment. On average, each participant contributed 6 years of data. The victimization measure captured diferent types of threats and assaults (including rape and gunshot). Results showed 978 (17.2%) observations during which participants reported victimization. On average, psychosocial maturation increased with age while victimization risk decreased. Crude and adjusted models of the between-individual effect showed that a one standard deviation increase in psychosocial maturation was associated with 39% and 20% lower odds of victimization, respectively. Crude and adjusted models of the within-individual effect showed that a one standard deviation increase in psychosocial maturation was associated with 22% and 17% lower odds of victimization, respectively. Psychosocial maturation appears to be a relevant predictor of victimization and aids in our understanding of victimization risk throughout adolescence and early adulthood.

The Dunedin Multidisciplinary Health and Development Study are an ongoing longitudinal investigation of health and behavior of a complete birth cohort that was drawn from the greater Dunedin metropolitan area, located in the southern coastal region of New Zealand's South Island. This chapter describes the methods used to develop and carry out the Dunedin Study, and how research using the Dunedin Study data is conducted. Location data are used by a "sample tracer" who is employed at each assessment to track, locate, and recruit Study members. The Dunedin Study uses a prospective-longitudinal, correlational design. The basic strategy of the Dunedin Study involves testing for causal relations within this correlational design. The Dunedin Study has comprehensive biomarkers of metabolic, liver, kidney, cardiovascular, dental, immune, and respiratory function, facial aging, and telomere length measured repeatedly at ages 26, 32, 38, and 45 years.

Importance

Health disparities between African Americans and Whites have persisted in the United States. Researchers have recently hypothesized that the relatively poor health of African Americans may be caused, in part, by African American overrepresentation in the criminal justice system.

Objectives

To test the hypothesis that criminal justice system involvement is associated with poor health and greater health risk when controlling for unobserved family factors through a discordant sibling design.

Methods

Subjects were drawn from the Carolina African American Twin Study of Aging (CAATSA). Criminal conviction records were extracted from North Carolina’s Department of Public Safety. Six measures of health and one measure of health risk were analyzed. The health of convicted respondents was compared to that of unrelated non-convicted respondents matched on childhood and demographic factors (“matched sample”). Convicted respondents were also compared to non-convicted siblings (“discordant sibling sample”).

Results

The matched sample included 134 CAATSA respondents. On average, convicted CAATSA respondents, compared to matched non-convicted respondents, were in worse health. Convicted respondents had worse mean self-reported health, worse lung function, more depressive symptoms, and smoked more. The discordant sibling sample included 74 respondents. Convicted siblings and non-convicted siblings had similar self-reported health, depressive symptoms, and smoking. In general, non-convicted siblings were in worse health than non-convicted respondents from the matched sample, implying that poor health runs in families.

Conclusions

This study provided preliminary evidence that some of the association between a criminal record and poor health is confounded by family factors. Though more research is needed to support these results, the study suggests that criminal involvement may not be associated with the surfeit of health problems observed among African Americans. The criminal justice system, nonetheless, could be used to decrease the health disparity.